subprocessBlocks.py

#!/usr/bin/python

# NOTE: BEFORE EXECUTING, REPLACE THE PATH IN cwd= IN THE FINAL LINE.

import subprocess
import copy
import os

globalEnv = copy.deepcopy( os.environ )
globalEnv["HGPLAIN"]="1" # Disable pager, etc in any following calls

def fullExec(cmd, cwd=None, env=None):
    proc = subprocess.Popen(cmd, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,env=env if env else globalEnv)
    result = proc.wait()
    outstr, errstr = proc.communicate()
    return bool(result),outstr,errstr

print "Going in"
fullExec(['hg', 'log'], cwd="/Users/mcc/work/h/test-emily-game")

# Expected behavior: Script completes
# Observed behavior: Script does not complete?!
# Invoking `HGPLAIN=1 hg log` in the cwd directory terminates just fine.